what is advantage of stator bonding lamination with high temperature glue for BLDC Motors

About Stator Bonding Lamination/ Bonding stator

Stator bonding also called glued stators lamination or bonded stator lamination. how to do it and what is the advantage of this technology?

As we know, all of the motor engineers would like to design the motor with higher efficiency, while some efficiency lost can not be avoid such as the iron loss of the stators. However, when the efficiency target is very strict, a simple improvement on the iron loss decrease would be much helpful for motor efficiency improving; so a bonding technology with high temperatue glue has been introduced, with bonding lamination, the iron loss caused by iter-lock(also called self-rivet point) or welding can be avoid. Normally we provide 4 types of lamination technology for stator stack laminations:

A. Interlock: it is common technology that being applied for most of the stators.

B. Loose Lamination: we combined our epoxy resin coating technology and our loos lamination technology to ensure the stators do not need any self-rivet point and welding to get perfect performance.. more details, please contact with us.

C. Stator Bonding: apply high temperature glue on the stators to glue the stator sheet together and ensure them will not loose. Typical process of stator bonding as below:

1. Punch the silicon steel sheet or EDM wire cut the silicon steel sheet.

2. Clean the sheet  to avoid burrs.(TBD)

3. Design hig precision of Lamination fixture

4. bond the sheet together by Epoxy to a stator height as designed.

5. Baking and ensure the glue is harden.

6  Inspection

D. Welding: we provide Laser welding for the stator stacks to get narrow welding area. this technology normally used for prototype sample customization and special application where has large torque.

More details about bonding technology, please feel free to contact with us for technical discussion.


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